I forgot to mention: If you'd like to try this yourself:
- start from http://www.ais.org.uk/ (this redirects to
www.nats-uk.ead-it.com)
- click "IAIP" (2nd entry on the menu bar
- click "Aerodrome Index - Specific" (4th entry on the left side menu)
- click "Cambridge - EGSC" (scroll down - its in the left column
- click "Cambridge Aerodrome - Textual Data" and you''' either get a
PDF or a 403.